This shirt warns you when you enter a concentrated area of Particle Pollution.
A mixture of solid particles and liquid droplets found in the air make up what is known as particle pollution. Many particles such as dust, dirt, soot, or smoke, are large or dark enough to be seen by the naked eye.
This shirt warns you when you enter a concentrated area of carbon monoxide.
Carbon Monoxide is the most common type of fatal poisoning. It is found in fumes produced any time you burn fuel.
Carbon monoxide can build up without anyone noticing since it is odorless and colorless. It will poison people and animals who breathe it in.